Jacquard embroidering-machine.



R. ZAHN. JACQUARD BMBROIDERING MACHINE.

APPLICATION FILED JUNE 17, 1912.

Patented June 3, 1913.,

mmm.

STATE@ PATENT @Fh-1113112.

JACQUARD EMBRGEEXNGMHNE.

origina; application ales seaman' telo, serias. no. @nasca Divas-a andthis appncanon and .iw 1 1912. serial ne. malos.

To all whom it may conf-cm.' y b Be it known that 1, ROBERT ZAHN, asubliect of the German Emperor, residing at lllauen, Kingdom of Saxony,Germany, have invented certain new and useful improvements in JacquardE1nbroidering-Machines, of which the following is a specification.

The invention relates to em roidering machines of the automatic type andmore particularly to= a mechanism tor adding up or totalling the largeand the Ismail move-l ments of the embroidery frame'and l1s a divisionlfrom the application 542,305 tiled lieb. the 5th, 1910, patented July2, 1912, No. 1,031,159. The transmission of movement to the embroideryframe in different directions is effected automatically in the mannerdescribed and illustrated in .the above named original application bymeans of jacquard controlled allotting members.

1n the accompanying drawing which forms a part of this specification andin which similar reference characters denote comel spending parts, alateral elevation is shown, illustrating more or less diagrannnaticallyan automatic embroidering machine according to this invention.

With reference to the drawing l denotes a horizontal slide and 11 avertical slide. From these slides tbe various movements are transmittedto the embroidery frame (not shown) by means vof a toothed slide 6,

.coperating with gear wheels 61 and rack ai,

as ful-ly described and shown in my Letters Patent above referred to andwhereby tire direction of movements is detcrmir'ied. The' slides areoperated from allotting members comprising horizontal and verticalcoupling rods, 2, 21 which are pivotally connected to rocking levers 3,31 in such a manner that the coupling rods 2, 21 are' given diderentthrows, according as they are arranged farther from or neare to thefulcrums 11, 411 of their respective levers 3,31. The coupling rods areactuated by bars 5, 51 to be coupled to their respective slides 1, 11.For coinbining or totaling thc different. movements imparted to saidslides 1, 11 l provide the following mechanism. Between the slide tail11l and the toothed slide 6 from which latter movement is transmitted tothe aiore# Spcoica tion of Lettere Patent..

vas the' slide 1.

are respectively carried by the tail 1 ot slide 1 and by the slide 6.The upper odg.; of the plate 7 carries a flange 12 which capable ofsliding longitudinally in :i groove 131 provided in a bar 13 formed atthe tail end of the slide 11. On the slide 1 being reciprocated theflange 12 will be caused to slide in the groove 131 and on the slide 11being reciprocated the two slides l, t3 are caused to approach or tomove away from one another. I

The operation of this mechanism is as follows :4 Assuming that the slide1, 11 is caused to perform a horizontal movement while the slide 11, 13,is stationary. The flange 12 is thus caused .to reciprocate in thegroove 131 of the piece 13 of the slide and the slide 0 is made totravel exactly the same distance Supposing now the slide 1, 1n to bestationary and the slide 11, 13 to be Gti caused to make a verticalmovement, it'will be seen that plate 7 will reciprocate on the blocks10, 11 in the respective slots 8, 9 whereby the'slide 6 will receive afraction of the moyement of the slide 11, 13, the ratio between the twomovements depending upon the angle of inclination of the slots S, 9..Assuming now this ratio to be 1:10

'and the slides 1, 1a to travel horizontally a 'distance of say 5 mm.and simultaneously ,the slide 11, 13 to perform a vertical movement ofsay 3 mm. These two movements are both transmitted to the slide 6 whichis thus moved to the extent of 5.3 mm. owing to the throw of 5 min.being directly transmitted to the slide 6, whereas the throw of 3 nun.owing tothe inclination of theA slots 8, 9de reduced to the tenth partof the movement performed by the slide 11, 13. In this manner thethrowot' the slide' (3 may be varied at will vaccording to the operationof Athe bars 5 and 51 bringing about the coupling of the rods 2,21 underthe action ofv the jacquard mechanism. Its shortest dis-f,

placement 0.1 mm. 4the slide 6 receives in the event of the slide 1, 1being stationary and the slide 11, 13 being' drawn down by the couplingrod 21 which in the drawing is farthest to the left, that is to say,which is nearest the fulcrum 41.' A throw of 0.9 mm.v is transmitted tothe slide 6 upon the slide `1, 11l being again stationary while theslide 11, 13 is drawn down by the coupling rod 21 which in the drawingis farthest to the right, that is to say, remotest from the amples andthe question as to whether the largest 9.9 min. dependsv entirely oncircunif'ulcruni 41. The throw ofthe slide 6 comes l min. when the slidel, 13 is stationary and slide 1, lL1 is moved to the right by thecoupling rod 2 which in the drawing occupies the lowermost position. Thelargest possible throw of the slide is 9.9 mm. and is attained when bothslides l, l and 1, i3 are moved by the couplingr rods 2 and 2lrespectively which are remotest from thel respective fulcrums 4, 4*.

The above numbers are of course mere exlshortest throw should be 0.1 mm.and the stances and on the minimum throw chosen under particularconditions herein.- Thus ifpfor instance, for the Aminimum throw 0.25anni. is chosen the corresponding maximum throw would be 24.75 mm.

What I claim and desire to secure by Letters Patent is:

1. -In an automatic embroidery machine l l,mechanism for combining thevarious movei ments of said allotting members and eomi 4-prising anintermediate member provided with oblique guides and movable parallel tothe direction ot movement of the driven member, said intermediate memberbeiiwi journalcd in one of the allotting members with which it ismovable in a transverse direction relative to said driven member.

2. In an automatic embroideryv machine, the combination with jacquardcontrolled horizontal and vertical allotting members and a'drivenmember, ot a mechanism for' combining the different movements of saidallotting ineinbeis and comprising an interinediate member between saidallotting members and said driven member having slots at an acute anglewith respect to each other, blocks carried by one of said allottingmembers and by said driven member and engaging said slots` and aconnection between said intermediate member and said other allottinpTmember, whereby the intermediate member is caused to move transversel)vto the first named allotting member and driven member to draw the sametogether or apart and which permits the said intermediate member to moveparallel to the said first named allotting member and said drivenmember.

In testimony whereof I aflix' my signature in presence of two witnesses.

Y ROBERT ZAHN. 'itnesses A. Civii'ris lto'iii, Ronicii'r Il. Ninn.

